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Shaper spindle safety lock washer

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Forum topic by cracknpop posted 05-18-2012 02:21 PM 1455 views 0 times favorited 5 replies Add to Favorites Watch
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cracknpop

195 posts in 1814 days


05-18-2012 02:21 PM

Topic tags/keywords: shaper safety spindle washer

Bought a Grizzly G1026 shaper from local cabinet shop. Came with 3 spindles. Manual says, “NEVER operate shaper without spindle safety locking washer immediately under the spindle nut.” I do not have one. Before ordering from Grizzly, thought I would ask…
Is the safety locking washer only necessary when ‘reversing’ the cutting direction?
Reason for asking is it appears the cabinet shop has been using the larger spindle without a locking safety washer(I know, this doesn’t automatically make it right). Also, my thought is when using it in normal counter-clockwise rotation, the force against the cutter would cause the spindle nut to tighten, not loosen (like a router bit).

I would appreciate your thoughts as I do not know that my “slightly less than superhuman” reflexes are quick enough to duck a flying shaper cutter.
Rick

-- Rick - I know I am not perfect, but I will keep pressing on toward the goal of becoming all I am called to be.


5 replies so far

View Don W's profile

Don W

17971 posts in 2033 days


#1 posted 05-19-2012 12:19 AM

I have a centrral machine shaper, and don’t know if its right, but I’ve been using it for 20 years without a lock washer. I haven’t had to duck a flying shaper cutter yet, but tomorrows another day.

-- Master hand plane hoarder. - http://timetestedtools.net

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cabmaker

1507 posts in 2274 days


#2 posted 05-19-2012 01:16 AM

I always use a flat washer on all shaper operations but it is just that, a flat washer. Dont know anything about a safety lock washer. I have a couple of those 1026 s and they have been ridden hard and put up wet. You could safely run that shaper without a washer of any type but I dont recomend it due to the wear you might put on the body of the cutters not to mention spindle thread backlash occurring eventually. Enjoy and have it ! BTW I have had a cutter fly off a spindle in the past. Just once though !

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cracknpop

195 posts in 1814 days


#3 posted 05-19-2012 02:54 AM

Thanks for your replies Don and cabmaker. I stopped by and visited with the cabinet shop owner and he too tells me they never used the safety lock washer but also notes, they never reversed the rotation either. Since I don’t know when I would need to reverse rotation, I guess I will not worry too much about it.

Anyone else have any thoughts on the need for a safety lock washer on a shaper?

-- Rick - I know I am not perfect, but I will keep pressing on toward the goal of becoming all I am called to be.

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Gshepherd

1727 posts in 1667 days


#4 posted 05-19-2012 08:06 AM

The Lock washer on a shaper is designed to stay put while the Nut turns on top of the lock washer and the washer will not spin on top of your cutter, it is only forced down. Imagine after a while you slightly gouge the regular washer then flip it upside down and it spins on top of your cutter head when you tighten it down. Just be sure the regular washer is free from any marks made by the nut tightening on it and you will be fine. I hope I explained it well enough…..

-- What we do in life will Echo through Eternity........

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Don W

17971 posts in 2033 days


#5 posted 05-19-2012 12:31 PM

Some of the cutters require reverse rotation, so it depends on the cutter you will buy and be using.

-- Master hand plane hoarder. - http://timetestedtools.net

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